For our second week in Electrical we made Logic probe testers.

A Logic probe tester is a very basic and easy to use tool. There are two loads comeing off the probe one negative and one postive. You connect poitive to positive on the battery and negative to negative. There are two L.E.Ds on the probe, one red and one green. With power connected to it both L.E.Ds should light up. Once you touch the postive terminal on the battery the red L.E.D will go out leaving the green lit. When you touch the negative terminal on the battery the Green L.E.D will go out leaving the red lit. When the Green L.E.D is let it means you have positive voltage at the point your touching and when the Red L.E.D is let it means you have negative volatage.